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Maryland Checklist - Category: Hydrozoans - all-time (Total: 9)
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Adventive
\n
Coastal Plain only
\n
Endangered (Federal)
\n
Endangered (MD)
\n
Excluded
\n
Exotic
\n
Extinct
\n
Extirpated
\n
Extralimital
\n
G1 (Highly globally rare)
\n
G1G2 (Highly globally rare)
\n
G2 (Globally rare)
\n
G2G3 (Globally rare)
\n
G3 (Globally rare/local)
\n
G3G4 (Globally vulnerable)
\n
G4
\n
G4G5
\n
G5
\n
Garrett only
\n
GH (No known extant occurrences)
\n
GU (Global status uncertain)
\n
Hybrid
\n
In need of conservation
\n
Invasive
\n
Nativity Uncertain
\n
Non-native
\n
Reviewable (MD/DCRC)
\n
S1 (Highly state rare)
\n
S1B (Highly state rare breeder)
\n
S1M (State rare migrant)
\n
S1N (State rare non-breeder)
\n
S1S2 (Highly state rare)
\n
S1S2B (State rare breeder)
\n
S2 (State rare)
\n
S2B (State rare breeder)
\n
S2B (State rare breeder)
\n
S2S3 (State rare)
\n
S2S3B (State rare breeder)
\n
S3 (Watch list)
\n
S3B (State watchlist breeder)
\n
S3S4
\n
S3S4B (State watchlist breeder)
\n
S4SE
\n
SH (Historical)
\n
SHB (State historical breeder)
\n
SR (State rare)
\n
Status Uncertain
\n
SUB (Status uncertain breeder)
\n
SXB (State extirpated breeder)
\n
SXM (State extirpated migrant)
\n
Threatened (Federal)
\n
Threatened (MD)
\n
Undescribed
\n
Vulnerable
\n
Waif
\n
Western MD only
\n
Worcester only
\n
Photos
Common Name
Genus
Species
Records
Category
Family
Order
Class
Kingdom
1
By-the-wind Sailor
Velella
velella
2
Hydrozoans
Porpitidae
Anthoathecatae
Hydrozoa
Animalia
2
Blue Button
Porpita
porpita
1
Hydrozoans
Porpitidae
Anthoathecata
Hydrozoa
Animalia
3
Green Hydra
Chlorohydra
viridissima
3
Hydrozoans
Hydridae
Anthoathecatae
Hydrozoa
Animalia
4
No Common Name
Cordylophora
caspia
1
Hydrozoans
Cordylophoridae
Anthoathecata
Hydrozoa
Animalia
5
No Common Name
Craspedacusta
sowerbyi
9
Hydrozoans
Olindiidae
Limnomedusae
Hydrozoa
Animalia
6
No Common Name
Rathkea
octopunctata
1
Hydrozoans
Rathkeidae
Anthoathecata
Hydrozoa
Animalia
7
No Common Name
Hydractinia
sp.
1
Hydrozoans
Hydractiniidae
Anthoathecata
Hydrozoa
Animalia
8
Portuguese Man-of-War
Physalia
physalis
3
Hydrozoans
Physaliidae
Siphonophora
Hydrozoa
Animalia
9
No Common Name
Nemopsis
bachei
1
Hydrozoans
Bougainvilliidae
Anthoathecatae
Hydrozoa
Animalia
